One of a series of boards nailed horizontally, with overlapping edges, as an outside covering for walls. Also collective singular.

= clapboard, n.1 (cf. the form claw-board).

In U.S. A board, thinner at one edge, used to cover the sides or roofs of houses, each board being made to overlap that below it; a weather-board.

obsolete variant of claw-board (= clapboard, n.1).

Chiefly U.S. The boarding forming the outer sides of a building, weatherboarding; similar material forming the outer part of a boat's hull. Also as…